Double-negative metamaterial unit cell



FIG. 1 is a top-left-front perspective view of a double-negative metamaterial unit cell showing our new design;

FIG. 2 is a top-right-front perspective view thereof;

FIG. 3 is a top-left-rear perspective view of thereof;

FIG. 4 is a top-right-rear perspective view thereof;

FIG. 5 is a front elevation view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof. 

CLAIM The ornamental design for a double-negative metamaterial unit cell, as shown and described. 